davis



F. DAVIS.

AUTOMOBILE LIFTING'FRAME.

APPLICATION FILED JULYS 1921.

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F. DAVIS.

AuToMoBlLE LlFrNG FRAME.

APPLICATIN FILED IULM/5.1921.

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AUTOMOBILE LIFTING FRAME.

APPLICATION EILED JULY 5. 1921.

)Patented 0st. l17 11922.

3 SHEETS-SHEET 3.

Patented @ein 17, i222.

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FRANK Davis; or siiiv Josu, cALIroRin-ii.

AUTOMOBILE nir'riiie snai/in.

Application indmuy` 5, is'ei. seriaiii. isaio.

Jose, inthe county of SantaV Clara l, and State i of, .California Hamme@ ma@ useful Improvements in Automobile Lifting Frames; and I do declare the following to be a full"l clear, andeXaCt description ofthe invention1 such as will enable others skilled in the art" to which it' appertains to make and' use the same.

This invention frame or jack for liftingan, automobile so that easy'access Vmay be had to the mechanism beneath the car.

Qne object of the'invent-io'n is'to provide a lifting frainef of the lcharacter described which willbeeasyto operateand which may be readily swung to a raised position and which may also bev easily lowered when desired'. V

Another 4object vof the invention isto provide a lifting frame having improved brac-- ing means for the portionof the .frame which will be swung upwardly in lifting the automobile. V

AnotherI `object of the invention is to provide a lifting frame so constructed that the automobile may be run onto or olf of .the frame and further so constructed that there willbeno danger of the automobile slipping transversely off of' the frame while in a i raised position.V

Another object ofthe invention isto pro-` 3'5 videa liftingl frame which will be s i1nple in construction and strong. and durable.

This invention is' illustrated in the accompanying drawings7 wherein:

Figure 1 is a view in side elevation show ing'the lifting frame in a lowered position andready to receive the automobile Figure 2 is a top plan View of the frame in the lowered position.

Figure 3 is a side elevation showing the frame in the raised position;

Figure 1 is a longitudinal sectional view through the frame in the raised position. Figure 5 is a transverse sectional view taken alongthe line -'5of F :ig-4.

Figure Gisa transverse sectional' view takenaipng are unsafe' of Figa.

'lhis 1 Y"oved liftifgframe is rn'ovided with base portion which is provided with. side bars 1' formed of heavy angle ironv and carrying standards 2 having bearings, 3 at their upper endssothat the pulleys t may be .rotatably carried lby these standards'. Shafts 5 and 6 are journalled in the side beams 1,the shafts 5, carrying pulley wheels A .Y 7i Mid th Slftsr having leveriarins 8 relates to anv improved rigidlyl mounted thereijn and provided with ratohetheads 9 forengagementi by pawls 10. pivotally connected with side arms 11 which entend froin theside bars 1. These pawls aire coiinected withrods which extend longitudinally .nfK theside b ars 1 as shown in Figs. 1 and2Y sothat the pawls may be caused 'to movetogether and may be simultaneously moved out of engagement with the ratchet heads when pressure is appliedV to the rods v12 to move the pawls out of en-A gagement with the ratchet heads against thefaction ofthe springs`13. Cables 14 areV connected with the free end portions ofthe levers and are passed about the pulley wheels 4. and 7 and `carried toward one end of the base where they are wound upon the drums lafter being brought into engagement with the guide pulleys 16. These pulleys 16 are mounted upon a shaft 17 and the drumsl are mounted upon a shaft 18 which in addition'to carrying the drums, also lcarriesy a ratchetwheel 19 and a lever 20. This shaft 18 is the main operating shaft of the lifting frame and when the shaft 18 is rotated by the engagement of the lever pawl 21 with the ratchet wheel 19'and releasably held against rotation in an opposite direction by the pawl 22, the lever arms 8 will be swung upwardly and will carry with them the bars 23 which entend transversely of the frame and will fit into the notches 2li of the side bars 'lV when the vlever arms are in a lowered 'positionas shownin Fig. 1. Abrake drum the brake may be brought into binding engagement with the brake drum 25 to revent the shaft 18 from rotating too rapidly when lowering the automobile.

rlhe wheels of the automobile will rest upon track bars 28 which are formed from eye-beams or from a pair of channel beams secured together. These track beams 28 are mounted upon the shaft 23 which connect the lever arms 8 and it will be readily seen that when the lever arms are swung upwardly, the track beams will also be moved upwardly and thus the automobile will be raised to an elevated position. In'y order to brace the shafts 23 and 6, there has been providedbracing means in theform of supI ports 29 positioned beneath the shafts 6 and bracing bars 30 which lit between the bars 6 and 23 and will swing upwardly with the lever arms 8 and thus always remain in the proper position between the shafts 6 and 23 to brace these shafts 23 and prevent them fromv being bent by the weight of an automobile.` f

' When this device is in use,'the vautomobile will be driven up the gang-plank 31 with the wheels passing v through the guides 32. These guides 32 are formed of channel iron andare positioned in alinement with the track beams 28 so'that the wheels will be guided onto the track beams. After the automobile is in place, the shaft 18 will be rotated through the medium of the actuating lever 2O and as the shaft rotates, the cables will be wound upon the drums 15 and the lever arms 8 will be swung upwardly thus through the medium of the shafts 23 lifting the track beams 28 and elevating the automobile so that it may be high enough to permit ready access to mechanism beneath the car.

y After the necessary repairs have been made,

the brake 26 may be applied and with the pawls 22 and 21 moved to an inoperative position, the rods 12 may be pressed downwardly to move the pawls 10 out of engagementy with the ratchet heads 6 thus releasing the lever arms 8 and` permitting the weight of the automobile to swing the arms 8 downwardly and thus lower the automobile to the position where it may be run off of the 'fframe.

standards and side bars, a main shaft jour' nalled in the side bars, drums carried by said main shaft, pivotally mounted lever arms having ratchet heads at their pivoted ends, wheel receiving track bars, cross shafts engaging said track bars and connected with said lever arms, cables connected with said lever arms and engaging said pulleys and wound upon said drums, means for rotating said main shaft to wind the cables upon the drums, pawls engaging the ratchet heads of said lever arms, resilient means yieldably holding said pawls in engagement with the ratchet heads, means for simultaneously moving the pawls out of engagement with the ratchet heads, and brake means for controlling rotation of the main shaft while the lever arms are swinging downwardly under the weight of an automobile upon the track bars.

2. An automobile lifting frame comprising a base, lever arms pivotally'connected with the base and having their pivoted ends provided with ratchet heads, pawls engaging the ratchet heads and yieldably held in engagement with the same, means for simultaneously moving the pawls out of engagement with the ratchet heads, a main drive ,shaft carried by the base, drums" carried by the main drive shaft, means for rotating the main drivev shaft, standards, guide means carried by the base and standards, cables connected with the lever arms and engaging said guide means and wound 'upon said drums, track bars supported from said lever arms and having movement vertically with respect to the base, and -a gang-way carried by the base and provided with wheel guides for guiding the wheels of an automobile onto and off of said track bars. f

3;' An automobile lifting frame comprising a base portion, track bars, lever arms pivot-y ally connected with the base structure, cross shafts carried by said lever arms and having engagement with the track bars, means for swinging the lever arms upwardly, means for releasably holding the lever arms in a raised position, and bracing means for the cross' shafts having engagement with the cross shafts and having swinging movement with the lever arms as the lever arms swing vertically to move the track bars froma lowered to a raised position.

4. A vehicle lifting frame comprising a base structure, shafts journalled f in said base, lever arms carried by said shafts, track elements, cross shafts carried by said lever arms and engaging said track elements, supports positioned beneath the first mentioned shafts, bracing bars positioned between and having engagement with the first and second mentioned shafts and having vertical swinging movement with the second mentioned shafts when the lever arms are swung vertically to raise said track elements, and means for swinging the lever arms vertically and retaining the lever arms and track elements in a raised position. *Y f 5. A- vehicle raising 'frame-` comprising a base structure, track elements, means for imparting vertical movement to the track eleshafts, said bracing means having vertical swinging movement with the lever arms as 10 the lever arms swing vertically to elevate the track elements.

In testimony whereof l have hereunto set my hand.

FRANK DAVIS. 

